On Thu, Jun 15, 2017 at 02:19:20PM +0530, Arvind Yadav wrote:
> drivers/pci/dwc/pci-dra7xx.c: In function ‘dra7xx_pcie_enable_msi_interrupts’:
> drivers/pci/dwc/pci-dra7xx.c:177:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
> ~LEG_EP_INTERRUPTS & ~MSI);
> ^
> drivers/pci/dwc/pci-dra7xx.c: In function ‘dra7xx_pcie_enable_wrapper_interrupts’:
> drivers/pci/dwc/pci-dra7xx.c:187:7: warning: large integer implicitly truncated to unsigned type [-Woverflow]
> ~INTERRUPTS);
I don't object to the patch itself (hopefully Kishon will verify that
it's correct), but the subject and changelog are now completely wrong.
If the patch is correct, it is now a bug fix and is not at all about
fixing a compilation warning. We used to write
~LEG_EP_INTERRUPTS & ~MSI
~(INTA | INTB | INTC | INTD) & ~MSI
~(BIT(0) | BIT(1) | BIT(2) | BIT(3)) & ~(BIT(4))
~(0x1 | 0x2 | 0x4 | 0x8) & ~(0x10)
~(0xf) & ~(0x10)
0xfffffff0 & 0xffffffef
0xffffffe0
and now we write
LEG_EP_INTERRUPTS | MSI
...
0x1f
It is about using these two registers correctly, and the fact that the
compilation warning goes away is a happy coincidence but not even
worth mentioning in the changelog.
So, if Kishon acks the content of the patch, please post this again
with an updated subject and changelog.
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
> ---
> Changes in v2:
> Add casts in the definitions.
> Changes in v3:
> Change logic insted of casting.
>
> drivers/pci/dwc/pci-dra7xx.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
> index 8decf46..668dc15 100644
> --- a/drivers/pci/dwc/pci-dra7xx.c
> +++ b/drivers/pci/dwc/pci-dra7xx.c
> @@ -174,7 +174,7 @@ static int dra7xx_pcie_establish_link(struct dw_pcie *pci)
> static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
> {
> dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI,
> - ~LEG_EP_INTERRUPTS & ~MSI);
> + LEG_EP_INTERRUPTS | MSI);
>
> dra7xx_pcie_writel(dra7xx,
> PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MSI,
> @@ -184,7 +184,7 @@ static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
> static void dra7xx_pcie_enable_wrapper_interrupts(struct dra7xx_pcie *dra7xx)
> {
> dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN,
> - ~INTERRUPTS);
> + INTERRUPTS);
> dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN,
> INTERRUPTS);
> }
> --
> 1.9.1
>
